Effects Of Additives On Reinforced Concrete Durability

Concrete additives are widely used for construction projects. These additives are part of concrete admixtures along with aggregate in measured amounts to improve the durability of concrete. Additives may be in the form of liquid or powder and can be used for batching and concreting methods.


Types of Concrete Additives including Effects

• Chemical additives

These additives reduce the overall cost of construction projects. How? They enhance the features of hardened concrete, guarantee the quality of cement while undergoing various phases (mixing, transporting, placing and curing).

• Mineral additives

Mineral additives are widely used by contractors handling various building projects because they are affordable. Aside from that, when mixed they can improve the strength of the concrete.
General Uses of Additives

• Additives are used to decrease the water mixture needed in concrete to produce the desired slump. They are often called “water reducing additives” and mostly favored by contractors doing huge projects where reinforcement on steel requires workability. Water reducing additives can reduce the amount of water in a concrete mixture to at least 5% – 10%.
• Some additives are used to quicken the hydration rate of cement. According to chemical manufacturers in UAE, these additives are called “accelerating admixtures” and used to improve the properties of concrete in cold weather conditions.
• Another usage of additives is infused air bubbles in the concrete mixture to prevent cracking and scaling that often arise due to frost action. These additives are referred as “air-entraining” and mixed on cement mixture.
• The Shrinkage-reducing additives are used in bridge decks, floor slabs, and buildings. They minimize the shrinkage stress that happens due to loss of excess water.
• The additives that reduce the water content to approximately 12 to 30 percent of a concrete mixture are the superplasticizers. They are usually added to the job site to prevent the slump loss.
• Corrosion inhibitors are additives that are used for the construction of parking areas, marine structures, and bridges where chlorine salt is evident. When chlorides come in direct contact on steel reinforcement in concrete the effect is corrosion. These additives are added after the setting of concrete to ensure corrosion resistance. They also prevent rust formation on steel that causes cracking and scaling.

Concrete Additives in the UAE
To know more about the usage of the additives and Corromix admixtures feel free to contact Corrotech Constructions Chemicals. They have a team of experts knowledgeable in the effects of additives on various construction projects. For more detailed information, you can also visit their website at http://www.mctuae.com



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